A stereolithography printer

Abstract

The application relates to a stereoscopic printer, which comprises a frame, a first driving assembly arranged on the frame and having a first output end capable of moving in a first direction relative to the frame, a second driving assembly arranged on the first output end and having a second output end capable of moving in a second direction relative to the first output end, a third driving assembly comprising a mounting arm extending in a third direction and a third output end slidably connected to the mounting arm, one end of the mounting arm being fixed to the second output end, and the third output end being capable of moving in the third direction relative to the second output end, a printing head assembly arranged on the third output end, and a printing platform assembly comprising a printing platform arranged on the frame and fixed relative to the frame. The application can reduce the situation that a model entity falls off the printing platform.

Description

Technical Field

[0001] This application relates to the field of stereoscopic printing, and in particular to a stereoscopic printer. Background Technology

[0002] In fused deposition modeling (FDM) type 3D printers, thermoplastic filament is melted by a heated printhead and deposited layer by layer onto a printing platform to ultimately form a 3D model. In developing this application, the inventors discovered at least the following problem in the related technology: the 3D model is prone to detaching from the printing platform. Utility Model Content

[0003] This application provides a 3D printer that can reduce the occurrence of 3D model entities falling off the printing platform.

[0004] The 3D printer provided in this application includes:

[0005] frame;

[0006] A first drive assembly is disposed on the frame and has a first output terminal that can move relative to the frame in a first direction;

[0007] The second drive component is disposed on the first output terminal and has a second output terminal that can move relative to the first output terminal in a second direction.

[0008] The third drive assembly includes a mounting arm extending in a third direction and a third output end slidably connected to the mounting arm. One end of the mounting arm is fixed to the second output end, and the third output end is movable in the third direction relative to the second output end.

[0009] The printhead assembly is located on the third output terminal; and

[0010] A printing platform assembly includes a printing platform, which is mounted on the frame and fixed relative to the frame.

[0011] In some embodiments, the first direction, the second direction, and the third direction are mutually perpendicular; or

[0012] The first direction includes a vertical direction, the second direction includes a horizontal first direction, and the third direction includes a horizontal second direction.

[0013] In some embodiments, the first drive assembly further includes a lead screw extending along the first direction, and the first output end is drively connected to the lead screw; or

[0014] The frame includes a first guide rail that extends along the first direction, and the first output end is slidably connected to the first guide rail.

[0015] In some embodiments, the 3D printer includes two first drive components, which are spaced apart in the second direction.

[0016] In some embodiments, the second drive assembly further includes a connecting arm extending along the second direction, one end of the connecting arm in the second direction being fixed to a first output terminal of one of the first drive assemblies, and the other end of the connecting arm in the second direction being fixed to a first output terminal of another first drive assembly;

[0017] The second output terminal is slidably connected to the connecting arm, and the second output terminal can move relative to the connecting arm in the second direction.

[0018] In some embodiments, the second driving component further includes:

[0019] A first motor is mounted on the connecting arm;

[0020] The first drive wheel is fixed to the output end of the first motor;

[0021] A first driven wheel is rotatably connected to the connecting arm; and

[0022] A first synchronous belt drives the first driving pulley and the first driven pulley.

[0023] The second output terminal is fixed to the first synchronous belt.

[0024] In some embodiments, the second drive assembly further includes a first adjustment seat, the first motor being fixed to the first adjustment seat, and the position of the first adjustment seat in the second direction being adjustable.

[0025] In some embodiments, the connecting arm includes a first arm body and a second guide rail that extend along the second direction and are fixedly connected. The first arm body is connected to a corresponding first output end at both ends in the second direction. The second guide rail is disposed on the first arm body, and the second output end is slidably connected to the second guide rail.

[0026] In some embodiments, the third driving component further includes:

[0027] The second motor is fixed on the mounting arm;

[0028] The second drive wheel is fixed to the output end of the second motor;

[0029] The second driven wheel is rotatably connected to the mounting arm; and

[0030] The second synchronous belt is connected to the second driving pulley and the second driven pulley.

[0031] The third output terminal is fixed to the second synchronous belt.

[0032] In some embodiments, the mounting arm includes a second arm body and a third guide rail that extend and are fixedly connected along the third direction. One end of the second arm body in the third direction is fixed to the second output end, and the third guide rail is disposed on the second arm body. The third output end is slidably connected to the third guide rail.

[0033] In some embodiments, the printing platform component further includes:

[0034] A conveyor belt including a planar region located on the side of the printing platform facing the print head assembly in the first direction to receive the model entity.

[0035] In some embodiments, the conveyor belt includes an inclined region located on one side of the planar region in the second or third direction, and extending inclined downward relative to the planar region; or

[0036] The printing platform assembly also includes a third motor, a third drive wheel, and a third driven wheel. The third motor is mounted on the frame, the third drive wheel is fixed to the output end of the third motor, and the third driven wheel is rotatably connected to the frame. The conveyor belt is driven by the third drive wheel and the third driven wheel.

[0037] One of the above technical solutions has the following advantages or beneficial effects: the printhead assembly can move upward relative to the frame in the first, second and third directions, while the printing platform does not move, which can reduce the occurrence of loosening and falling off of the model entity on the printing platform caused by the movement of the printing platform. Attached Figure Description

[0038] Figure 1 This is a schematic diagram of an explosion of a 3D printer according to an embodiment of this application;

[0039] Figure 2 This is a partial structural diagram of the 3D printer according to an embodiment of this application;

[0040] Figure 3 for Figure 2 A magnified view of a portion of the A structure;

[0041] Figure 4 for Figure 2 The image shown is a three-dimensional front view of a 3D printer.

[0042] Figure 5 for Figure 4 BB cross-sectional view;

[0043] Figure 6 for Figure 5 A magnified view of a portion of the C-structure;

[0044] Figure 7 for Figure 5 A magnified view of a local D-structure;

[0045] Figure 8 for Figure 4 The left view;

[0046] Figure 9 for Figure 8 EE sectional view;

[0047] Figure 10 for Figure 9 A magnified view of the local F-structure;

[0048] Figure 11 This is a schematic diagram of the printing platform component structure in the 3D printer of this application embodiment;

[0049] Figure 12 for Figure 11 The diagram shows a top view of the printing platform component in a 3D printer.

[0050] Figure 13 for Figure 12 GG cross-sectional view;

[0051] Figure 14 for Figure 12 HH sectional view;

[0052] Figure 15 for Figure 12 Sectional view II;

[0053] Wherein: 1-Frame (101-Frame body, 102-First guide rail, 103-Seat body (1031-Limiting hole, 1032-Leaning hole, 1033-First fastening hole)), 2-First drive assembly (201-First output end, 202-Lead screw, 203-Fourth motor), 3-Second drive assembly (301-Second output end (3011-First fixed arm, 3012-First slider, 3013-First fixed plate), 302-Connecting arm (3021- 3022-First arm body, 3023-Second guide rail), 303-First motor, 304-First drive wheel, 305-First driven wheel, 306-First synchronous belt, 307-First adjusting seat), 4-Third drive assembly (401-Mounting arm (4011-Second arm body, 4012-Third guide rail), 402-Third output end (4021-Second slider), 403-Second motor, 404-Second drive wheel, 405-Second driven wheel) 406-Second Synchronous Belt), 5-Print Head Assembly, 6-Print Platform Assembly (601-Print Platform (6011-Upper Surface, 6012-Third End), 602-Third Motor, 603-Third Drive Wheel (6031-Second Contact Surface), 604-Third Driven Wheel (6041-First Contact Surface, 6042-First Axle), 605-Conveyor Belt (6051-Planar Area, 6052-Inclined Area), 606-Support Platform, 607-Height) Adjusting components (6071-threaded component, 6072-sleeve component), 608-second adjusting seat (6081-third assembly hole), 609-fourth driving wheel, 610-third synchronous belt, 611-second limiting component, 612-stripping plate, 613-fourth driven wheel, 614-second wheel shaft), 7-first fastener (701-first bolt, 702-first nut), 8-second fastener, 9-first limiting component, 10-fourth fastener, 11-fifth fastener. Detailed Implementation

[0054] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings. Preferred embodiments of this application are shown in the drawings. However, this application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a thorough and complete understanding of the disclosure of this application.

[0055] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component.

[0056] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0057] Please refer to Figures 1 to 15 This application embodiment of a 3D printer includes a frame 1, a first drive assembly 2, a second drive assembly 3, a third drive assembly 4, a printhead assembly 5, and a print platform assembly 6. The first drive assembly 2 is mounted on the frame 1 and has a first output end 201, which is movable relative to the frame 1 in a first direction. The second drive assembly 3 is mounted on the first output end 201 and has a second output end 301, which is movable relative to the first output end 201 in a second direction. The third drive assembly 4 includes a mounting arm 401 and a third output end 402. The mounting arm 401 extends in a third direction, one end of which is fixed to the second output end 301. The third output end 402 is slidably connected to the mounting arm 401 and is movable relative to the second output end 301 in a third direction. The printhead assembly 5 is mounted on the third output end 402 and is used to extrude heated consumables. The printing platform assembly 6 includes a printing platform 601, which is mounted on the frame 1 and is fixed relative to the frame 1.

[0058] In this embodiment, the printhead assembly 5 can move upward relative to the frame 1 in a first direction, a second direction, and a third direction, while the print platform 601 remains stationary. This reduces the likelihood of the model entity on the print platform 601 becoming loose and falling off due to movement of the print platform 601.

[0059] In related technologies, a first drive component is needed to move the print nozzles, and a second drive component is needed to move the print platform to achieve 3D printing. However, during the printing process, the movement of the print platform may cause the still-uncured model to shift, affecting the printing success rate and accuracy. Furthermore, the second drive component not only continuously bears the weight of the print platform and the model but also drives the movement of the print platform carrying the model, placing a significant load on it and leading to considerable wear and tear. To avoid damage to the second drive component due to excessive load, the weight of the model is often strictly controlled.

[0060] In this embodiment, only the printhead assembly 5 moves upwards in the first, second, and third directions, while the printing platform 601 remains fixed. This not only enables stereoscopic printing but also effectively ensures the stability and levelness of the printing platform 601, solving the problem of model entity displacement caused by the movement of the printing platform 601 carrying the model entity. This effectively improves the printing success rate and printing accuracy. Furthermore, since the printing platform 601 does not need to carry the moving model entity during printing, the load on the printing platform 601 is effectively reduced, increasing its load-bearing capacity. In other words, the printing platform 601 can be used not only to carry lighter model entities but also to carry heavier model entities, such as solid model entities, effectively broadening the applicability of the stereoscopic printer.

[0061] In some implementations, the first direction, the second direction, and the third direction are perpendicular to each other.

[0062] As an example, the first direction is the Z-axis, the second direction is the Y-axis, and the third direction is the X-axis. It should be noted that in other embodiments, the second direction can also be the X-axis, the third direction can be the Y-axis, etc., which can be set according to the actual situation, and will not be elaborated here.

[0063] In other embodiments, the first direction, the second direction, and the third direction may not be mutually perpendicular. For example, the first direction includes a vertical direction, the second direction includes a horizontal first direction, and the third direction includes a horizontal second direction; the second direction and the third direction may not be perpendicular. Alternatively, the first direction, the second direction, and the third direction may be other directions, which can be set according to actual conditions and will not be elaborated here. For some embodiments, please refer to... Figure 9 and Figure 10 The 3D printer includes two first drive assemblies 2, spaced apart in a second direction and symmetrically arranged in the second direction. The second drive assembly 3 further includes a connecting arm 302 extending along the second direction. The connecting arm 302 has a first end and a second end arranged opposite each other in the second direction. The first end of the connecting arm 302 is fixed to a first output end 201 of one of the first drive assemblies 2, and the second end of the connecting arm 302 is fixed to the first output end 201 of the other first drive assembly 2. The second output end 301 is slidably connected to the connecting arm 302 and is movable relative to the connecting arm 302 in the second direction.

[0064] In this embodiment, two first drive components 2 are provided. One first drive component 2 supports the first end of the connecting arm 302 in the first direction and drives the first end of the connecting arm 302 to move in the first direction. The other first drive component 2 supports the second end of the connecting arm 302 in the first direction and drives the second end of the connecting arm 302 to move in the first direction, thereby supporting the printhead assembly 5 more stably and improving the movement stability of the printhead assembly 5.

[0065] As an example, the two first drive components 2 can drive the first end and the second end of the connecting arm 302 to move synchronously.

[0066] It is understandable that when it is necessary to adjust the connecting arm 302 to a horizontal state, the two first drive components 2 can also drive the first end and the second end of the connecting arm 302 to move asynchronously. This can be set according to the actual situation, which will not be elaborated here.

[0067] As one implementation method, please refer to Figure 9 The frame 1 includes a frame body 101 and a first guide rail 102. The first guide rail 102 extends along a first direction and is fixed to the frame body 101. A first output end 201 is slidably connected to the first guide rail 102. The first drive assembly 2 also includes a lead screw 202, which extends along the first direction and is rotatably connected to the frame body 101 about its own axis. The first output end 201 is drively connected to the lead screw 202. The relative position of the lead screw 202 and the first guide rail 102 is fixed, and the lead screw 202 and the first guide rail 102 are arranged parallel to each other at intervals. When the lead screw 202 rotates about its own axis, the first output end 201 moves along the first direction under the combined action of the lead screw 202 and the first guide rail 102.

[0068] As an example, the frame 101 can be Figure 1 , Figure 2 , Figure 4 and Figure 9 The gantry structure shown.

[0069] As one implementation method, please refer to Figure 9 Each first drive component 2 includes a fourth motor 203, and a lead screw 202 is connected to the output end of the corresponding fourth motor 203. The two fourth motors 203 can work simultaneously, driving the two lead screws 202 to rotate simultaneously, thereby enabling the two first output ends 201 to move synchronously in the first direction.

[0070] It should be noted that in other embodiments, the lead screws 202 of the two first drive components 2 may share a single motor, meaning that the two lead screws 202 are driven by the same motor. Alternatively, in other embodiments, the first drive component 2 may have other structures. Furthermore, in other embodiments, the 3D printer may include only one or more first drive components 2, which can be configured according to actual conditions and will not be elaborated upon here.

[0071] In some implementation methods, please refer to Figure 5 ,as well as Figures 8 to 10 The second drive assembly 3 further includes a first motor 303, a first drive pulley 304, a first driven pulley 305, and a first synchronous belt 306. The first motor 303 is mounted on the connecting arm 302. The first drive pulley 304 is connected to the output end of the first motor 303. The first driven pulley 305 is rotatably connected to the connecting arm 302. The first synchronous belt 306 drives the first drive pulley 304 and the first driven pulley 305. The cooperation of the first drive pulley 304 and the first driven pulley 305 can tension the first synchronous belt 306, thereby ensuring an effective transmission connection between the first synchronous belt 306 and the first drive pulley 304 and preventing slippage. The second output end 301 is fixed to the first synchronous belt 306. When the first motor 303 operates, the power output by the first motor 303 drives the first drive pulley 304 to rotate. The rotation of the first drive pulley 304 drives the first synchronous belt 306 to move, thereby causing the second output end 301 fixed to the first synchronous belt 306 to rotate.

[0072] As an example, the axis of the first driving pulley 304 and the axis of the first driven pulley 305 extend along a third direction, respectively, and the first synchronous belt 306 has a first side and a second side disposed opposite to each other in the first direction. For example, when the first direction is Z, the first side can be the upper side, the second side can be the lower side, and the second output end 301 can be fixed to the upper side of the first synchronous belt 306, or the second output end 301 can be as follows: Figure 3 and Figure 10 As shown, it is fixed to the lower side of the first synchronous belt 306. As long as the first synchronous belt 306 moves, it can drive the second output terminal 301 to move in the second direction.

[0073] In some implementation methods, please refer to Figure 2 , Figure 4 and Figure 10 The second drive assembly 3 also includes a first adjusting seat 307, to which the first motor 303 is fixed. The first adjusting seat 307 is detachably fixed to the connecting arm 302, and its position in the second direction is adjustable, thereby adjusting the distance between the first driving wheel 304 and the first driven wheel 305, and thus tensioning the first synchronous belt 306.

[0074] As one implementation method, please refer to Figure 5 , Figure 6 and Figure 10 The first adjusting seat 307 has a first mounting hole (not shown in the figure), and the connecting arm 302 has a second mounting hole 3021, which corresponds to the first mounting hole. The 3D printer also includes a first fastener 7, which includes a first bolt 701 and a first nut 702. The first bolt 701 passes through the second mounting hole 3021 and the first mounting hole and is threadedly connected to the first nut 702, thereby fixing the first adjusting seat 307 to the connecting arm 302 and preventing the first adjusting seat 307 from moving relative to the connecting arm 302 during printing. At least one of the first mounting hole and the second mounting hole 3021 is an elongated hole extending along a second direction.

[0075] As an example, please refer to Figure 10 The 3D printer may include two first fasteners 7. Correspondingly, the first adjusting seat 307 has two first mounting holes, and the connecting arm 302 has two second mounting holes 3021. The first mounting holes and the first fasteners 7 are configured in a one-to-one correspondence, and the second mounting holes 3021 and the first fasteners 7 are configured in a one-to-one correspondence. In this embodiment, the provision of two first fasteners 7, two first mounting holes, and two second mounting holes 3021 can effectively limit the position of the first adjusting seat 307, prevent the first adjusting seat 307 from rotating relative to the connecting arm 302, and also prevent the position of the first adjusting seat 307 from changing in the first direction.

[0076] It should be noted that in other implementations, the 3D printer may also include one first fastener or three or more first fasteners, which can be set according to the actual situation, and will not be elaborated here.

[0077] In some examples, the first mounting hole is a round hole, and the second mounting hole 3021 is... Figure 10 The oblong hole is shown. In some examples, the first mounting hole is an oblong hole and the second mounting hole is a round hole. In some examples, both the first and second mounting holes are oblong holes. It should be noted that, if the position of the first adjusting seat does not need to be adjusted, both the first and second mounting holes can be round holes.

[0078] As one implementation method, please refer to Figure 3 , Figure 6 and Figure 10The connecting arm 302 includes a first arm body 3022 and a second guide rail 3023. Both the first arm body 3022 and the second guide rail 3023 extend along a second direction, and the second guide rail 3023 is fixed to the first arm body 3022. The second guide rail 3023 is disposed at one end of the first arm body 3022 in the first direction. One end of the first arm body 3022 in the second direction is connected to one of the first output terminals 201, and the other end of the first arm body 3022 in the second direction is connected to the other first output terminal 201. The second output terminal 301 is slidably connected to the second guide rail 3023 at one end in the first direction, and the other end of the second output terminal 301 in the first direction is fixed to the first synchronous belt 306.

[0079] In this embodiment, the second output end 301 is not only fixed to the first synchronous belt 306 but also slidably connected to the second guide rail 3023. The first synchronous belt 306 is used to drive the second output end 301 to move along the second direction. The second guide rail 3023 can support the second output end 301 and limit the movement path of the second output end 301, so that the second output end 301 can move more stably along the second direction, and can also avoid the first synchronous belt 306 from becoming too overloaded and becoming loose or damaged.

[0080] As an example, please refer to Figure 3 , Figure 6 and Figure 10 The second output end 301 may include a first fixed arm 3011, a first slider 3012, and a first fixed plate 3013. The first fixed arm 3011 is U-shaped, and the first slider 3012 and the first fixed plate 3013 are respectively disposed at both ends of the first fixed arm 3011 in a first direction. The first slider 3012 is fixed to the first fixed arm 3011 and is slidably connected to the second guide rail 3023. The first fixed plate 3013 is detachably fixed to the first fixed arm 3011. The first side or the second side of the first synchronous belt 306 is clamped between the first fixed plate 3013 and the first fixed arm 3011. The first fixed arm 3011 and the first fixed plate 3013 clamping the first synchronous belt 306 are fixed by the second fastener 8.

[0081] In some implementation methods, please refer to Figure 3 and Figure 6The third drive assembly 4 also includes a second motor 403, a second drive pulley 404, a second driven pulley 405, and a second synchronous belt 406. The second motor 403 is fixed to the mounting arm 401. The second drive pulley 404 is fixed to the output end of the second motor 403. The second driven pulley 405 is rotatably connected to the mounting arm 401. The second synchronous belt 406 is driven by the second drive pulley 404 and the second driven pulley 405. The cooperation of the second drive pulley 404 and the second driven pulley 405 can tension the second synchronous belt 406, thereby ensuring an effective transmission connection between the second synchronous belt 406 and the second drive pulley 404 and preventing slippage. The third output end 402 is fixed to the second synchronous belt 406. When the second motor 403 operates, the power output by the second motor 403 drives the second drive pulley 404 to rotate. The rotation of the second drive pulley 404 drives the second synchronous belt 406 to move, thereby causing the third output end 402 fixed to the second synchronous belt 406 to rotate.

[0082] As an example, please refer to Figure 3 and Figure 6 The axis of the second driving pulley 404 and the axis of the second driven pulley 405 extend along the second direction, respectively. The second synchronous belt 406 has a third side and a fourth side that are arranged opposite to each other in the first direction. For example, when the first direction is Z, the third side can be the upper side and the fourth side can be the lower side. The third output end 402 can be fixed to the upper side of the second synchronous belt 406, or the third output end 402 can be fixed to the lower side of the second synchronous belt 406, as long as the movement of the second synchronous belt 406 can drive the third output end 402 to move along the third direction.

[0083] As one implementation method, please refer to Figure 3 and Figure 6 The mounting arm 401 includes a second arm body 4011 and a third guide rail 4012. Both the second arm body 4011 and the third guide rail 4012 extend along a third direction. The third guide rail 4012 is fixed to the second arm body 4011 and is located at one end of the second arm body 4011 in a first direction. The second arm body 4011 is fixed to the second output end 301 at one end in the third direction. The third output end 402 is slidably connected to the third guide rail 4012 at one end in the first direction, and the other end of the third output end 402 is fixed to the second synchronous belt 406.

[0084] In this embodiment, the third output terminal 402 is not only fixed to the second synchronous belt 406 but also slidably connected to the third guide rail 4012. The second synchronous belt 406 is used to drive the third output terminal 402 to move along a third direction. The third guide rail 4012 can support the third output terminal 402 and limit the movement path of the third output terminal 402, so that the third output terminal 402 can move more stably along the third direction, and can also avoid the second synchronous belt 406 from becoming loose or damaged due to excessive load.

[0085] As an example, the structure of the third output terminal 402 is similar to that of the second output terminal 301. The third output terminal 402 may include a second fixed arm (not shown), a second slider 4021, and a second fixed plate (not shown). The second fixed arm is U-shaped, and the second slider 4021 and the second fixed plate are respectively disposed at both ends of the second fixed arm in a first direction. The second slider 4021 is fixed to the second fixed arm and is slidably connected to the third guide rail 4012. The second fixed plate is detachably fixed to the second fixed arm. The third or fourth side of the second synchronous belt 406 is clamped between the second fixed plate and the second fixed arm. The second fixed arm and the second fixed plate clamping the second synchronous belt 406 are fixed by a third fastener (not shown).

[0086] In some implementation methods, please refer to Figure 1 and Figure 2 The frame 1 also includes a base 103, which is fixedly connected to the frame 101. The printing platform assembly 6 also includes a third motor 602, a third drive wheel 603, a third driven wheel 604, and a conveyor belt 605. The third motor 602 is mounted on the frame 1, the third drive wheel 603 is fixed to the output end of the third motor 602, the third driven wheel 604 is rotatably connected to the frame 1, and the conveyor belt 605 is drively connected to the third drive wheel 603 and the third driven wheel 604. The conveyor belt 605 includes a planar region 6051 and an inclined region 6052. The planar region 6051 is located on the side of the printing platform 601 facing the printhead assembly 5 in a first direction to receive the model entity. The inclined region 6052 is located on the side of the planar region 6051 in a second or third direction and extends downward at an inclination relative to the planar region 6051.

[0087] In this embodiment, in addition to the printing platform 601 that supports the model entity, a conveyor belt 605 is also provided to transport the model entity, facilitating unloading after printing. Furthermore, the conveyor belt 605 includes a planar region 6051 and an inclined region 6052. The model entity is printed onto the planar region 6051, preventing it from tipping over. After printing, the conveyor belt 605 moves, causing the model entity located in the planar region 6051 to move to the inclined region 6052. Because the inclined region 6052 extends downwards at an angle relative to the planar region 6051, the model entity tends to detach from the conveyor belt 605 within the inclined region 6052, further facilitating unloading.

[0088] It should be noted that in the above embodiments, the printing platform 601 indirectly carries the model entity, while the conveyor belt 605 directly carries the model entity. In other embodiments, the printing platform component 6 may not include the conveyor belt 605, and the printing platform 601 may directly carry the model entity. This can be set according to the actual situation, and will not be elaborated here.

[0089] As one implementation method, please refer to Figure 11 and Figure 14 The third driven wheel 604 has a first contact surface 6041 that contacts the conveyor belt 605. The highest point of the first contact surface 6041 is on the same horizontal plane as the upper surface 6011 of the printing platform 601. The third driving wheel 603 has a second contact surface 6031 that contacts the conveyor belt 605. The highest point of the second contact surface 6031 is lower than the upper surface 6011 of the printing platform 601. The printing platform 601 has a third end 6012, which is the end of the printing platform 601 that is closer to the third driving wheel 603 and further away from the third driven wheel 604. The area of ​​the conveyor belt 605 between the third end 6012 and the third driving wheel 603 of the printing platform 601 is an inclined area 6052, and the area of ​​the conveyor belt 605 between the third end 6012 and the third driven wheel 604 of the printing platform 601 is a planar area 6051.

[0090] As one implementation method, please refer to Figure 7 , Figure 11 and Figure 14 The printing platform assembly 6 also includes a support platform 606 and a height adjustment component 607. The support platform 606 is fixed to the frame 1, and the printing platform 601 is fixed to the support platform 606 via the height adjustment component 607. During installation, the height of the support platform 606 can be adjusted via the height adjustment component 607, so that the highest point of the upper surface 6011 of the printing platform 601 and the first contact surface 6041 are on the same horizontal plane, thereby ensuring that the planar area 6051 is in a horizontal state.

[0091] As an example, please refer to Figure 7 , Figure 11 and Figure 14 The height adjustment component 607 includes a threaded component 6071 and a sleeve component 6072. One end of the threaded component 6071 passes through the sleeve component 6072 and is screwed into the support platform 606, while the other end of the threaded component 6071 is confined within the printing platform 601. The sleeve component 6072 abuts between the printing platform 601 and the support platform 606. In other words, the sleeve component 6072 can be used to limit the height of the printing platform 601. When it is necessary to adjust the height of the printing platform 601, the original sleeve component 6072 can be replaced with a sleeve component of appropriate height. In addition, the original threaded component 6071 can also be replaced with a threaded component of appropriate height accordingly.

[0092] In some examples, please refer to Figure 7 and Figure 14 In order to more effectively support the model entity and ensure printing quality, the upper surface of the threaded part 6071 can be located on the same horizontal plane as the upper surface 6011 of the printing platform 601.

[0093] As an example, the printing platform 601 is a square platform, and the printing platform assembly 6 includes two sets of height adjustment members 607 symmetrically arranged in the second direction. Each set of height adjustment members 607 includes two height adjustment members 607 symmetrically arranged in the third direction. That is, the printing platform assembly 6 includes four height adjustment members 607, thereby providing more stable support for the printing platform 601.

[0094] In one implementation, the distance between the third driven wheel 604 and the third driving wheel 603 is adjustable. When the conveyor belt 605 is slack, the distance between the third driven wheel 604 and the third driving wheel 603 can be increased to tension the conveyor belt 605.

[0095] As an example, please refer to Figures 11 to 14 The third driven wheel 604 and the third driving wheel 603 are spaced apart in the second direction. The third driven wheel 604 is detachably connected to the frame 1, and its position in the second direction is adjustable. When the conveyor belt 605 is slack, the third driven wheel 604 can be moved in the second direction away from the third driving wheel 603, thereby increasing the distance between the third driven wheel 604 and the third driving wheel 603. After the third driven wheel 604 is moved into position, its first axle 6042 is fixed to the frame 1.

[0096] In some examples, please refer to Figure 13 and Figure 15The frame 1 has a limiting hole 1031, a clearance hole 1032, and a first fastening hole 1033. The limiting hole 1031 is inserted into the first wheel shaft 6042 of the third driven wheel 604, with both axial ends of the first wheel shaft 6042 respectively inserted into the corresponding limiting hole 1031. The limiting hole 1031 is an elongated hole extending along a second direction. The clearance hole 1032 is provided in a one-to-one correspondence with the limiting hole 1031, and the clearance hole 1032 communicates with the limiting hole 1031 along the second direction. The first fastening hole 1033 is provided in a one-to-one correspondence with the clearance hole 1032, and the first fastening hole 1033 communicates with the clearance hole 1032 along a third direction. The 3D printer also includes a first limiting member 9 and a fourth fastener 10. As an example, the first limiting member 9 and the fourth fastener 10 can be screws. The first limiting member 9 extends along the second direction, with one end protruding outside the frame 1 and the other end passing through the clearance hole 1032 and being fixed by means of threaded connection to the first wheel axle 6042. The fourth fastener 10 is threaded into the first fastening hole 1033, and the end of the fourth fastener 10 extends into the clearance hole 1032 and abuts against the first limiting member 9 to prevent the first limiting member 9 from moving along the second direction, thereby fixing the first wheel axle 6042 to the frame 1. When it is necessary to tension the conveyor belt 605, the fourth fastener 10 is unscrewed, and then the first limiting member 9 is dragged along the second direction, causing the third driven wheel 604 to move away from the third driving wheel 603 along the second direction, thereby tensioning the conveyor belt 605. After tensioning the conveyor belt 605, the fourth fastener 10 in the first fastening hole 1033 is tightened so that the fourth fastener 10 abuts against the first limiting member 9 to fix the first wheel axle 6042.

[0097] It should be noted that in other embodiments, the third driving wheel 603 and the third driven wheel 604 may also be arranged at intervals in the third direction, or the position of the third driving wheel 603 may be adjustable to tension the conveyor belt 605, or the positions of both the third driving wheel 603 and the third driven wheel 604 may be adjustable to tension the conveyor belt 605. The specific configuration can be determined according to the actual situation, and will not be elaborated here.

[0098] As one implementation method, please refer to Figure 11The printing platform assembly 6 also includes a second adjusting seat 608, a fourth driving wheel 609, a fourth driven wheel 613, a second wheel shaft 614, and a third synchronous belt 610. The second adjusting seat 608 is fixed to the frame 1, the third motor 602 is fixed to the second adjusting seat 608, the fourth driving wheel 609 is fixed to the output shaft of the third motor 602, the fourth driven wheel 613 and the third driving wheel 603 are coaxially fixed to the second wheel shaft 614, and the third synchronous belt 610 is drivingly connected to the fourth driving wheel 609 and the fourth driven wheel 613. After printing is completed, the third motor 602 drives the fourth driving wheel 609 to rotate, the fourth driving wheel 609 drives the fourth driven wheel 613 to rotate through the third synchronous belt 610, the rotating fourth driven wheel 613 drives the third driving wheel 603 to rotate, and the rotating third driving wheel 603 drives the conveyor belt 605 to move to achieve material removal.

[0099] As an example, the second adjustment seat 608 is detachably fixed to the frame 1, and the position of the second adjustment seat 608 on the frame 1 is adjustable, thereby adjusting the distance between the fourth driving wheel 609 and the fourth driven wheel 613, and thus tensioning the third synchronous belt 610.

[0100] In some examples, please refer to Figure 11 The second adjusting seat 608 has a third mounting hole 6081, and the frame 1 has a fourth mounting hole (not shown in the figure). The fourth mounting hole corresponds to the third mounting hole 6081. The 3D printer also includes a fifth fastener 11, which includes a second bolt and a second nut. The second bolt passes through the fourth mounting hole and the third mounting hole 6081 and is threadedly connected to the second nut, thereby fixing the second adjusting seat 608 to the frame 1 and preventing the second adjusting seat 608 from moving relative to the frame 1 during use. At least one of the third mounting hole 6081 and the fourth mounting hole is an elongated hole extending along a second direction.

[0101] As an example, please refer to Figure 11 The 3D printer may include two fifth fasteners 11. Correspondingly, the second adjusting seat 608 has two third mounting holes 6081, and the frame 1 has two fourth mounting holes. The third mounting holes 6081 and the fifth fasteners 11 are configured in a one-to-one correspondence, and the fourth mounting holes and the fifth fasteners 11 are configured in a one-to-one correspondence. In this embodiment, the provision of two fifth fasteners 11, two third mounting holes 6081, and two fourth mounting holes can effectively fix the position of the second adjusting seat 608 and prevent the second adjusting seat 608 from rotating relative to the frame 1.

[0102] It should be noted that in other implementations, the 3D printer may also include one or three or more fifth fasteners, which can be set according to the actual situation, and will not be elaborated here.

[0103] In some examples, the third mounting hole 6081 is Figure 11 The fourth mounting hole is a round hole, while the third mounting hole is a round hole. In some examples, the third mounting hole is a round hole and the fourth mounting hole is an oblong hole. In some examples, both the third and fourth mounting holes are oblong holes. It should be noted that if the position of the second adjusting seat does not need to be adjusted, both the third and fourth mounting holes can be round holes.

[0104] As one implementation method, please refer to Figure 11 The second adjusting seat 608 is adjustable in position in the second direction, and the printing platform assembly 6 also includes a second limiting member 611. The second limiting member 611 extends in the second direction, is threadedly connected to the second adjusting seat 608, and one end of the second limiting member 611 abuts against the frame 1, thereby effectively limiting the minimum distance between the fourth driving wheel 609 and the fourth driven wheel 613.

[0105] In some implementation methods, please refer to Figure 1 and Figure 2 The printing platform assembly 6 also includes a stripper plate 612, which is fixed to the base 103 and located at the end of the inclined region 6052 away from the planar region 6051. As an example, the stripper plate 612 extends downwards at an angle to facilitate stripping. In some examples, the angle between the stripper plate 612 and the horizontal plane can be greater than the angle between the inclined region 6052 and the horizontal plane, allowing the model entity to slide down the stripper plate 612 more quickly.

[0106] It should be noted that in other embodiments, the angle between the stripper plate 612 and the horizontal plane can be equal to or less than the angle between the inclined region 6052 and the horizontal plane, and can be set according to the actual situation, which will not be elaborated here.

[0107] This embodiment also provides another stereo printer, which includes a frame, a print head, and a print platform assembly. The print head is mounted on the frame, and the print platform assembly includes a print platform mounted on the frame. The print platform assembly also includes a conveyor belt with a planar area located on the side of the print platform facing the print head assembly in a first direction to receive the model entity. Other structures of this stereo printer, the specific structure of the frame, the specific structure of the print head, the specific structure of the print platform assembly, and the beneficial effects thereof can be found in the above embodiments and will not be repeated here.

[0108] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0109] The above embodiments merely illustrate preferred implementations of this application, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the scope of protection of this application. Therefore, the scope of protection of this patent application should be determined by the appended claims.

Claims

1. A 3D printer, characterized in that, include: frame; A first drive assembly is disposed on the frame and has a first output terminal that can move relative to the frame in a first direction; The second drive component is disposed on the first output terminal and has a second output terminal that can move relative to the first output terminal in a second direction. The third drive assembly includes a mounting arm extending in a third direction and a third output end slidably connected to the mounting arm. One end of the mounting arm is fixed to the second output end, and the third output end is movable in the third direction relative to the second output end. A printhead assembly is located on the third output terminal; and A printing platform assembly includes a printing platform, which is mounted on the frame and fixed relative to the frame.

2. The 3D printer as described in claim 1, characterized in that, The first direction, the second direction, and the third direction are all perpendicular to each other; or The first direction includes a vertical direction, the second direction includes a horizontal first direction, and the third direction includes a horizontal second direction.

3. The 3D printer as described in claim 1, characterized in that, The first drive assembly further includes a lead screw extending along the first direction, and the first output end is drively connected to the lead screw; or The frame includes a first guide rail that extends along the first direction, and the first output end is slidably connected to the first guide rail.

4. The 3D printer as described in claim 1, characterized in that, The 3D printer includes two first drive components, which are spaced apart in the second direction.

5. The 3D printer as described in claim 4, characterized in that, The second drive assembly further includes a connecting arm extending along the second direction, wherein one end of the connecting arm in the second direction is fixed to a first output terminal of one of the first drive assemblies, and the other end of the connecting arm in the second direction is fixed to a first output terminal of the other first drive assembly; The second output terminal is slidably connected to the connecting arm, and the second output terminal can move relative to the connecting arm in the second direction.

6. The 3D printer as described in claim 5, characterized in that, The second driving component also includes: A first motor is mounted on the connecting arm; The first drive wheel is fixed to the output end of the first motor; A first driven wheel is rotatably connected to the connecting arm; and A first synchronous belt drives the first driving pulley and the first driven pulley. The second output terminal is fixed to the first synchronous belt.

7. The 3D printer as described in claim 5, characterized in that, The connecting arm includes a first arm body and a second guide rail that extend along the second direction and are fixedly connected. The first arm body is connected to a corresponding first output end at both ends in the second direction. The second guide rail is disposed on the first arm body, and the second output end is slidably connected to the second guide rail.

8. The 3D printer as described in claim 1, characterized in that, The third driving component also includes: The second motor is fixed on the mounting arm; The second drive wheel is fixed to the output end of the second motor; The second driven wheel is rotatably connected to the mounting arm; and The second synchronous belt is connected to the second driving pulley and the second driven pulley. The third output terminal is fixed to the second synchronous belt.

9. The 3D printer as described in claim 1, characterized in that, The printing platform component also includes: A conveyor belt including a planar region located on the side of the printing platform facing the print head assembly in the first direction to receive the model entity.

10. The 3D printer as described in claim 9, characterized in that, The conveyor belt includes an inclined region located on one side of the planar region in the second or third direction, and extending downward at an angle relative to the planar region; or The printing platform assembly also includes a third motor, a third drive wheel, and a third driven wheel. The third motor is mounted on the frame, the third drive wheel is fixed to the output end of the third motor, and the third driven wheel is rotatably connected to the frame. The conveyor belt is driven by the third drive wheel and the third driven wheel.

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